Broadband CPW-Fed Circularly Polarized Square Slot Antenna with Arc-Shaped and Inverted-L Grounded Strips

Authors

  • A. Mousazadeh Department of Engineering, Science and Research branch, Islamic Azad University, Tehran, 14778-93855, Iran
  • M. Naser-Moghaddasi Department of Engineering, Science and Research branch, Islamic Azad University, Tehran, 14778-93855, Iran
  • F. Geran Department of Engineering, Science and Research branch, Islamic Azad University, Tehran, 14778-93855, Iran
  • S. Mohammadi Department of Electrical Engineering, Urmia University, Urmia, 57561-51818, Iran
  • P. Zibadoost Department of Electrical Engineering, Urmia University, Urmia, 57561-51818, Iran

Keywords:

Axial ratio (AR), broadband, circularly polarized (CP), square slot antenna

Abstract

This paper presents a new wideband circularly polarized square slot antenna (CPSSA) with a coplanar waveguide (CPW) feed. The proposed antenna is composed of two arc-shaped and inverted-L grounded strips around opposite and mirror corners of the square slot. In this antenna the impedance bandwidth and the axial ratio bandwidth (ARBW) are increased compared to the previous CPSSA structures. For the optimized antenna prototype, the measured 3 dB axial ratio bandwidth is 76 % (3 GHz - 6.7 GHz) and the measured VSWR < 2 impedance bandwidth is as large as 108 % (3 GHz - 10.1 GHz). Throughout this paper, the improvement process of the axial ratio (AR) and S11 properties are presented and discussed in detail.

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References

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Published

2021-10-06

How to Cite

[1]
A. . Mousazadeh, M. . Naser-Moghaddasi, F. . Geran, S. . Mohammadi, and P. . Zibadoost, “Broadband CPW-Fed Circularly Polarized Square Slot Antenna with Arc-Shaped and Inverted-L Grounded Strips”, ACES Journal, vol. 28, no. 04, pp. 314–320, Oct. 2021.

Issue

2013: Vol 28 Iss 4

Section

General Submission